Valve.



,IINITED STATES PATENT orrron'.

Specification of Letters Patent.

. Patented. Aug. 1, 1905.

Application filed April 14, 1904. Serial No. 203,057.

' .To aZZ whom it may concern.-

Be it known that I, ARTHUR L. CANFIELD, a

: citizen of the United States, residing atNew York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Valves, of which the following is a full, clear, andexact specification.

This invention relates to valves, and has ref- 'erence more especiallyto improvements adapted to render valves more convenient of access 3 andmanipulation.

loose after having once been placed in position,

According to this invention I have devised a separable extension whichcan be easily attached to the stem of any of the valves now in commonuse without requiring any modification or change in the valve itself. 1This extension comprises a tubular stem adapted to be attached at oneend to the valve-stem in place of the usual valve-handle and havingmeans at the other end to which the valvehandle may be secured, togetherwith means for holding the parts under stress, so that they cannot workloose, the whole forminga rigid and advantageous construction.

The invention will be more fully described in connection with the formsthereof shown in the accompanying drawings, in which- Figure 1 is aView, partly in section, show.- ing my invention applied to aradiator-valve. Fig. 2 is a View of a radiator having my inventionapplied thereto. Fig. 3 is a view similar to Fig. 1, showing amodification adapted for a different valve-stem; and Fig.

- 4 shows the use of the invention as applied to a radiator having asurrounding casing. Fig. 5 is a detail View of the bearing adjustment.

1 is the valve-body, containing any suitable valve mechanism andcontrolling the passage between the pipes 2 and 3.

4 is the valve-stem, threaded in the casing in the usual manner, byturning which the valve may be opened and closed. The valvestem 4 invalves as ordinarily constructed extends perhaps three or four inchesfrom the top of the casing and has attached thereto the operating handle6. The handles are attached to'the stem in various ways; but commonly byone or the other of the Ways illustrated herein in Figs. 1 and 3. InFig. l'the end of the valve-stem 4 is squared and tapered,

I as at 5, and the handle 6 has a socket-plate 7,

containing a similar squared socket into which the end 5 of the stem 4fits. The upper side of the handle 6 has a resilient washer 11, having acentral hole through which ashort screw (not shown) passes and screwsinto a hole 8 in the valve-stem 4. This is one common way of attachingthe handle 6 to the valve-stem 4. When it is desired to apply myinvention to the valve-stem, so as to enable the valveto be moreconveniently, operated, the handle 6'is removed from the stem 4 and atubular sleeve 9, having the lower end flared and squared to fit theportion 5, is placed on the end of the valve-stem. 3 The upper end ofthe tube 9 is tapered and squared similarly to theend 5 of the stem 4,so as to fit the socket in the socketplate vi.

10 is a tension-rod threaded at both ends, one end adapted to be screwedinto the hole 8 in the valve-stem and the other adapted to receive a nut12 to fasten the parts rigidly together, or the nut 12 may be fastenedon the rod 10. By screwing the nut or roddown suificiently hard the rod10 will be put under tension and the tube 9 under compression,

thus forming a connection of great strength and rigidity, which may beadjusted to varying degrees of tension.

In Fig. 2 the radiator 14 has attached thereto an adjustablebearing-plate 13, through which the tube 9 passes in order to form alateral support. In Fig. 5, 22 is a sliding plate carrying a bearing andadjustably attached to the plate 13 by a bolt 23. This is only necessarywhere an extension of unusual length is used. In Fig. 4 the invention isshown applied to a radiator 14, inclosed in a casing 21 and having ahorizontal valve-stem. The casing may carry a plate similar to 13 wheredesired.

Fig. 3 shows a slightly different construction adapted for valves wherethe end of the stem is externally threaded, as at 16. In thisconstructionthe end of the valve-stem 4 is tapered, as before, and thesocket-plate of the handle has a corresponding taper. A nut screws onthe threaded portion 16 and against the plate or washer 11 to hold thehandle in position. 17 'is a tubular coupling adapted to screw on thethread 16 and having a threaded hole 19 at its other end adapted toreceive the rod 10. The lower end of the tube is flared and fits on thetapered portion of the stem 4:. The upper end is tapered to fit thesocket in the handle, and the nut 12 on rod 10 binds all of the partstogether, as heretofore desc'ri'bedin connection with Fig. 1.

It will thus be seen that my invention can be attached to any valve-stemwithout requiri-ng any modification in the valve itself and that a valveequipped with this invention can be much more conveniently operated thanthe ordinary valve not provided with this invention. ,Another feature ofadvantage is that it may be applied without requiring any change in thevalve to valves now in use or in stoek, Modifications and changes may bemade without departing from the scope of the invention,=and I do notdesire to be limited to the exact construction which I have shown anddescribed.

Having thu described my invention, I declarethat what 1 claim as new,and desire to secure by Letters Patent, is

1. The combination with-a valve-stem having an angular end, of a tubehaving one end shaped internally to fit said stem and its other endangularly shaped externally to receive a handle, a handle having acentral hole adapted to fit over the end of the tube, and a tension-rodsecured to the valve-stem at one end and bearing on the handle at theother end to secure the parts together, substantially as described.

2. The combination with a valve-stem having an angular end, of a tubehaving one end angularly shaped internally to fit said stem, and itsother end angularly shaped externally to receive a handle, a handlehaving a countersunk central hole fitted to said tube, a resilient platecarried by said handle, and a tension-rod secured to the valve-stem atone end and bearing on the resilient plate at the handle end, wherebythe parts are resiliently'secured together, substantially as described.

3. The combination with a valve-stem having an angular end, of a tubehaving one end angularly shaped internally to fit said stem, and itsother end angularly shaped externally to receive a handle, a handlehaving a central hole fitted to said tube, a coupling-sleeve attached tothe stem within the tube, and a tension-rod secured to the coupling atone end and bearing on the handle at the other end, whereby the partsare secured together, substantially as described.

In testimony whereof I alfix my signature in presence of two witnesses.

ARTHUR L. CANFIELD.

Witnesses:

JULIAN S. WOOSTER, L. R. SAGER.

